Abstract
IN view of recent interest in negative ions, it seems useful to report certain results obtained here in the early stages of a programme concerned with negative ions in flames. We have described elsewhere1 a mass-spectrometric system suitable for the abstraction of ions from hot flame gases, and their subsequent analysis. This has so far largely been used for positive ions2,3, but it is adaptable to the study of negative ions, albeit with a somewhat reduced sensitivity. A small flame plays directly on a very small sampling hole in a platinum diaphragm, on the other side of which a low pressure is maintained by pumping. It has been shown that the positive ions produced in names may in some cases undergo reaction to produce other ions in the course of traversing the cooler boundary layer near the walls of the sampling hole3,4. In the work described here, no attempt has been made to ascertain whether the negative ions were produced in the flame or in the boundary layer, the primary interest lying rather in the wide variety of ions found.
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References
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KNEWSTUBB, P., SUGDEN, T. Mass-Spectrometric Observations of Negative Ions in Flame Gases. Nature 196, 1311–1312 (1962). https://doi.org/10.1038/1961311a0
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DOI: https://doi.org/10.1038/1961311a0
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